Interesting. I'm finding it hard to read I'm afraid but the hazard switch looks logical. Have you kept the board and just isolated some circuits and made direct connections? And what about the warning light panel?
The only thing I didn't find was the engine, battery and the the start security light. The rest was no problem to bypass. I used a 2006 schematic. If I can find out about this 3 light than I dont have to use the el.board.